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我想在Ubuntu上構建一個小的ROS C++項目（http://wiki.ros.org/loam_continuous）。我似乎不完全理解ros/rosmake或catkin的原理。首先，我不太明白主目錄是指什麼。現在我已經根據其中一個初學者教程在我的主目錄中創建了一個carkin_ws文件夾，並且在我運行rosmake時將4個cpp文件放在./src/loam_continuous/ 之下，它給了我以下我不明白的消息。使用rosmake（ubuntu 16.04上的動態）構建C++項目
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~/catkin_ws/src/loam_continuous$ rosmake loam_continuous
[ rosmake ] rosmake starting...
[ rosmake ] Packages requested are: ['loam_continuous']
[ rosmake ] Logging to directory /home/svens/.ros/rosmake/rosmake_output-20161201-205703
[ rosmake ] Expanded args ['loam_continuous'] to:
['loam_continuous']
[rosmake-0] Starting >>> catkin [ make ]
[rosmake-1] Starting >>> loam_continuous [ make ]
[rosmake-0] Finished <<< catkin ROS_NOBUILD in package catkin
No Makefile in package catkin
[rosmake-0] Starting >>> genmsg [ make ]
[rosmake-7] Starting >>> cpp_common [ make ]
[rosmake-4] Starting >>> cmake_modules [ make ]
[rosmake-3] Starting >>> rosgraph [ make ]
[rosmake-5] Starting >>> rosclean [ make ]
[rosmake-6] Starting >>> smclib [ make ]
[rosmake-7] Finished <<< cpp_common ROS_NOBUILD in package cpp_common
No Makefile in package cpp_common
[rosmake-2] Starting >>> angles [ make ]
[rosmake-7] Starting >>> rostime [ make ]
[rosmake-4] Finished <<< cmake_modules ROS_NOBUILD in package cmake_modules
No Makefile in package cmake_modules
[rosmake-0] Finished <<< genmsg ROS_NOBUILD in package genmsg
No Makefile in package genmsg
[rosmake-4] Starting >>> rospack [ make ]
[rosmake-5] Finished <<< rosclean ROS_NOBUILD in package rosclean
No Makefile in package rosclean
[rosmake-0] Starting >>> genlisp [ make ]
[rosmake-3] Finished <<< rosgraph ROS_NOBUILD in package rosgraph
No Makefile in package rosgraph
[rosmake-5] Starting >>> genpy [ make ]
[rosmake-3] Starting >>> gencpp [ make ]
[rosmake-6] Finished <<< smclib ROS_NOBUILD in package smclib
No Makefile in package smclib
[rosmake-2] Finished <<< angles ROS_NOBUILD in package angles
No Makefile in package angles
[rosmake-6] Starting >>> geneus [ make ]
[rosmake-2] Starting >>> gennodejs [ make ]
[rosmake-7] Finished <<< rostime ROS_NOBUILD in package rostime
No Makefile in package rostime
[rosmake-7] Starting >>> roscpp_traits [ make ]
[rosmake-0] Finished <<< genlisp ROS_NOBUILD in package genlispe 9/65 Complete ]
No Makefile in package genlisp
[rosmake-0] Starting >>> roslang [ make ]
[rosmake-3] Finished <<< gencpp ROS_NOBUILD in package gencpp
No Makefile in package gencpp
[rosmake-3] Starting >>> xmlrpcpp [ make ]
[rosmake-5] Finished <<< genpy ROS_NOBUILD in package genpy
No Makefile in package genpy
[rosmake-5] Starting >>> rosparam [ make ]
[rosmake-2] Finished <<< gennodejs ROS_NOBUILD in package gennodejs
No Makefile in package gennodejs
[rosmake-2] Starting >>> rosmaster [ make ]
[rosmake-6] Finished <<< geneus ROS_NOBUILD in package geneus
No Makefile in package geneus
[rosmake-6] Starting >>> message_generation [ make ]
[rosmake-7] Finished <<< roscpp_traits ROS_NOBUILD in package roscpp_traits
No Makefile in package roscpp_traits
[rosmake-7] Starting >>> roscpp_serialization [ make ]
[rosmake-0] Finished <<< roslang ROS_NOBUILD in package roslang
No Makefile in package roslang
[rosmake-0] Starting >>> class_loader [ make ]
[rosmake-4] Finished <<< rospack ROS_NOBUILD in package rospack
No Makefile in package rospack
[rosmake-4] Starting >>> roslib [ make ]
[rosmake-3] Finished <<< xmlrpcpp ROS_NOBUILD in package xmlrpcpp
No Makefile in package xmlrpcpp
[ rosmake ] All 3 lines
{-------------------------------------------------------------------------------
mkdir: cannot create directory ‘build’: Permission denied[rosmake-2] Finished <<< rosmaster ROS_NOBUILD in package rosmaster
No Makefile in package rosmaster
[rosmake-5] Finished <<< rosparam ROS_NOBUILD in package rosparam
No Makefile in package rosparam
/opt/ros/kinetic/share/mk/cmake.mk:7: recipe for target 'all' failed
-------------------------------------------------------------------------------}
[rosmake-6] Finished <<< message_generation ROS_NOBUILD in package message_generation
No Makefile in package message_generation
[ rosmake ] Output from build of package loam_continuous written to:
[ rosmake ] /home/svens/.ros/rosmake/rosmake_output-20161201-205703/loam_continuous/build_output.log
[rosmake-7] Finished <<< roscpp_serialization ROS_NOBUILD in package roscpp_serialization
No Makefile in package roscpp_serialization
[rosmake-7] Starting >>> message_runtime [ make ]
[rosmake-1] Finished <<< loam_continuous [FAIL] [ 0.05 seconds ]
[ rosmake ] Halting due to failure in package loam_continuous.
[ rosmake ] Waiting for other threads to complete.
[rosmake-4] Finished <<< roslib ROS_NOBUILD in package roslib
No Makefile in package roslib
[rosmake-0] Finished <<< class_loader ROS_NOBUILD in package class_loader
No Makefile in package class_loader
[rosmake-7] Finished <<< message_runtime ROS_NOBUILD in package message_runtime
No Makefile in package message_runtime
[ rosmake ] Results:
[ rosmake ] Built 26 packages with 1 failures.
[ rosmake ] Summary output to directory
[ rosmake ] /home/svens/.ros/rosmake/rosmake_output-20161201-205703 `
當我看一下日誌文件只包含這樣的：
mkdir: cannot create directory ‘build’: Permission denied
/opt/ros/kinetic/share/mk/cmake.mk:7: recipe for target 'all' failed
make: *** [all] Error 1
我試圖使用sudo運行rosmake但它似乎不承認命令時，我使用sudo。有人能指出我可能的解決方案嗎？